java嵌入lua有多种方案可选择，比如纯java的luaj 、纯C jni的 luajava还有个lua4j。在android中嵌入lua，我偏向使用luajava(当然面对除arm外的平台如x86、mips或需单独打包).

要使用luajava除了要下载luajava还要下载lua源码，需要注意的是luajava并不支持lua2.0以上的版本，我测试支持的版本是5.1.4,而且luajava中缺少头文件luajava.h(本文末提供该文件下载)。下载完后把lua和luajava的luajava.c和luajava.h解压到同一个文件夹，注意：把llex.c源文件的trydecpoint函数中的

ls->decpoint = (cv ? cv->decimal_point[0] : '.');

改为

ls->decpoint = '.';

不然编译不过。

实际项目中嵌入lua可能我们并不乐意让人轻易知道我们使用了lua。这就要编译so时不输出lua中的api和luajava的Java_org_keplerproject_luajava_LuaState_XXX函数。

关闭lua的api输出，可以在luaconf.h头文件中找到LUA_API宏

#define LUA_API extern

将它改为

#define LUA_API extern __attribute__((visibility("hidden")))

而要关闭luajava中输出函数，则需要把luajava中JNIEXPORT标识的函数去除JNIEXPORT，和在JNI_OnLoad中注册所有Java_org_keplerproject_luajava_LuaState_XXX函数(这种函数命名实在是丑陋！)。以下是我整理出来的函数(其中注释掉的函数是luajava中的作者并没有实现的).

static JNINativeMethod METHOD_LUASTATE[]={

{"_open", "()Lorg/keplerproject/luajava/CPtr;", (void *)Java_org_keplerproject_luajava_LuaState__1open},

{"_close", "(Lorg/keplerproject/luajava/CPtr;)V", (void *)Java_org_keplerproject_luajava_LuaState__1close},

{"_newthread", "(Lorg/keplerproject/luajava/CPtr;)Lorg/keplerproject/luajava/CPtr;", (void *)Java_org_keplerproject_luajava_LuaState__1newthread},

{"_getTop","(Lorg/keplerproject/luajava/CPtr;)I",(void*)Java_org_keplerproject_luajava_LuaState__1getTop},

{"_setTop","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1setTop},

{"_pushValue","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushValue},

{"_remove","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1remove},

{"_insert","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1insert},

{"_replace","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1replace},

{"_checkStack","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1checkStack},

{"_xmove","(Lorg/keplerproject/luajava/CPtr;Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1xmove},

{"_isNumber","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isNumber},

{"_isString","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isString},

{"_isCFunction","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isCFunction},

{"_isUserdata","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isUserdata},

{"_type","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1type},

{"_typeName","(Lorg/keplerproject/luajava/CPtr;I)Ljava/lang/String;",(void*)Java_org_keplerproject_luajava_LuaState__1typeName},

{"_equal","(Lorg/keplerproject/luajava/CPtr;II)I",(void*)Java_org_keplerproject_luajava_LuaState__1equal},

{"_rawequal","(Lorg/keplerproject/luajava/CPtr;II)I",(void*)Java_org_keplerproject_luajava_LuaState__1rawequal},

{"_lessthan","(Lorg/keplerproject/luajava/CPtr;II)I",(void*)Java_org_keplerproject_luajava_LuaState__1lessthan},

{"_toNumber","(Lorg/keplerproject/luajava/CPtr;I)D",(void*)Java_org_keplerproject_luajava_LuaState__1toNumber},

{"_toInteger","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1toInteger},

{"_toBoolean","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1toBoolean},

{"_toString","(Lorg/keplerproject/luajava/CPtr;I)Ljava/lang/String;",(void*)Java_org_keplerproject_luajava_LuaState__1toString},

{"_objlen","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1objlen},

{"_toThread","(Lorg/keplerproject/luajava/CPtr;I)Lorg/keplerproject/luajava/CPtr;",(void*)Java_org_keplerproject_luajava_LuaState__1toThread},

{"_pushNil","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushNil},

{"_pushNumber","(Lorg/keplerproject/luajava/CPtr;D)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushNumber},

//{"_pushInteger","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushInteger},

{"_pushString","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushString__Lorg_keplerproject_luajava_CPtr_2Ljava_lang_String_2},

{"_pushString","(Lorg/keplerproject/luajava/CPtr;[BI)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushString__Lorg_keplerproject_luajava_CPtr_2_3BI},

{"_pushBoolean","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushBoolean},

{"_getTable","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1getTable},

{"_getField","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;)V",(void*)Java_org_keplerproject_luajava_LuaState__1getField},

{"_rawGet","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1rawGet},

{"_rawGetI","(Lorg/keplerproject/luajava/CPtr;II)V",(void*)Java_org_keplerproject_luajava_LuaState__1rawGetI},

{"_createTable","(Lorg/keplerproject/luajava/CPtr;II)V",(void*)Java_org_keplerproject_luajava_LuaState__1createTable},

{"_getMetaTable","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1getMetaTable},

{"_getFEnv","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1getFEnv},

{"_setTable","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1setTable},

{"_setField","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;)V",(void*)Java_org_keplerproject_luajava_LuaState__1setField},

{"_rawSet","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1rawSet},

{"_rawSetI","(Lorg/keplerproject/luajava/CPtr;II)V",(void*)Java_org_keplerproject_luajava_LuaState__1rawSetI},

{"_setMetaTable","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1setMetaTable},

{"_setFEnv","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1setFEnv},

{"_call","(Lorg/keplerproject/luajava/CPtr;II)V",(void*)Java_org_keplerproject_luajava_LuaState__1call},

{"_pcall","(Lorg/keplerproject/luajava/CPtr;III)I",(void*)Java_org_keplerproject_luajava_LuaState__1pcall},

{"_yield","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1yield},

{"_resume","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1resume},

{"_status","(Lorg/keplerproject/luajava/CPtr;)I",(void*)Java_org_keplerproject_luajava_LuaState__1status},

{"_gc","(Lorg/keplerproject/luajava/CPtr;II)I",(void*)Java_org_keplerproject_luajava_LuaState__1gc},

{"_error","(Lorg/keplerproject/luajava/CPtr;)I",(void*)Java_org_keplerproject_luajava_LuaState__1error},

{"_next","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1next},

{"_concat","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1concat},

{"_pop","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1pop},

{"_newTable","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1newTable},

{"_strlen","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1strlen},

{"_isFunction","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isFunction},

{"_isTable","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isTable},

{"_isNil","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isNil},

{"_isBoolean","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isBoolean},

//{"_isThread","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isThread},

{"_isNone","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isNone},

{"_isNoneOrNil","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1isNoneOrNil},

{"_setGlobal","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)V",(void*)Java_org_keplerproject_luajava_LuaState__1setGlobal},

{"_getGlobal","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)V",(void*)Java_org_keplerproject_luajava_LuaState__1getGlobal},

{"_getGcCount","(Lorg/keplerproject/luajava/CPtr;)I",(void*)Java_org_keplerproject_luajava_LuaState__1getGcCount},

{"_LdoFile","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LdoFile},

{"_LdoString","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LdoString},

{"_LgetMetaField","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LgetMetaField},

{"_LcallMeta","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LcallMeta},

{"_Ltyperror","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1Ltyperror},

{"_LargError","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LargError},

{"_LcheckString","(Lorg/keplerproject/luajava/CPtr;I)Ljava/lang/String;",(void*)Java_org_keplerproject_luajava_LuaState__1LcheckString},

{"_LoptString","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;)Ljava/lang/String;",(void*)Java_org_keplerproject_luajava_LuaState__1LoptString},

{"_LcheckNumber","(Lorg/keplerproject/luajava/CPtr;I)D",(void*)Java_org_keplerproject_luajava_LuaState__1LcheckNumber},

{"_LoptNumber","(Lorg/keplerproject/luajava/CPtr;ID)D",(void*)Java_org_keplerproject_luajava_LuaState__1LoptNumber},

{"_LcheckInteger","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1LcheckInteger},

{"_LoptInteger","(Lorg/keplerproject/luajava/CPtr;II)I",(void*)Java_org_keplerproject_luajava_LuaState__1LoptInteger},

{"_LcheckStack","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;)V",(void*)Java_org_keplerproject_luajava_LuaState__1LcheckStack},

{"_LcheckType","(Lorg/keplerproject/luajava/CPtr;II)V",(void*)Java_org_keplerproject_luajava_LuaState__1LcheckType},

{"_LcheckAny","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1LcheckAny},

{"_LnewMetatable","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LnewMetatable},

{"_LgetMetatable","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)V",(void*)Java_org_keplerproject_luajava_LuaState__1LgetMetatable},

{"_Lwhere","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState__1Lwhere},

{"_Lref","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1Lref},

{"_LunRef","(Lorg/keplerproject/luajava/CPtr;II)V",(void*)Java_org_keplerproject_luajava_LuaState__1LunRef},

{"_LgetN","(Lorg/keplerproject/luajava/CPtr;I)I",(void*)Java_org_keplerproject_luajava_LuaState__1LgetN},

{"_LsetN","(Lorg/keplerproject/luajava/CPtr;II)V",(void*)Java_org_keplerproject_luajava_LuaState__1LsetN},

{"_LloadFile","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LloadFile},

{"_LloadBuffer","(Lorg/keplerproject/luajava/CPtr;[BJLjava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LloadBuffer},

{"_LloadString","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;)I",(void*)Java_org_keplerproject_luajava_LuaState__1LloadString},

{"_Lgsub","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",(void*)Java_org_keplerproject_luajava_LuaState__1Lgsub},

{"_LfindTable","(Lorg/keplerproject/luajava/CPtr;ILjava/lang/String;I)Ljava/lang/String;",(void*)Java_org_keplerproject_luajava_LuaState__1LfindTable},

{"_openBase","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openBase},

{"_openTable","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openTable},

{"_openIo","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openIo},

{"_openOs","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openOs},

{"_openString","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openString},

{"_openMath","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openMath},

{"_openDebug","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openDebug},

{"_openPackage","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openPackage},

{"_openLibs","(Lorg/keplerproject/luajava/CPtr;)V",(void*)Java_org_keplerproject_luajava_LuaState__1openLibs},

{"luajava_open","(Lorg/keplerproject/luajava/CPtr;I)V",(void*)Java_org_keplerproject_luajava_LuaState_luajava_1open},

{"_getObjectFromUserdata","(Lorg/keplerproject/luajava/CPtr;I)Ljava/lang/Object;",(void*)Java_org_keplerproject_luajava_LuaState__1getObjectFromUserdata},

{"_isObject","(Lorg/keplerproject/luajava/CPtr;I)Z",(void*)Java_org_keplerproject_luajava_LuaState__1isObject},

{"_pushJavaObject","(Lorg/keplerproject/luajava/CPtr;Ljava/lang/Object;)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushJavaObject},

{"_pushJavaFunction","(Lorg/keplerproject/luajava/CPtr;Lorg/keplerproject/luajava/JavaFunction;)V",(void*)Java_org_keplerproject_luajava_LuaState__1pushJavaFunction},

{"_isJavaFunction","(Lorg/keplerproject/luajava/CPtr;I)Z",(void*)Java_org_keplerproject_luajava_LuaState__1isJavaFunction}

};

OK!最后将org.keplerproject.luajava包名和类名也一同改改(当然如果 改 了也要注意修改so中的函数签名)，再给so取个其他的什么名字^_^。希望本文对您有所帮助。